Characteristics and application of 9Cr18 stainless steel ball

- Aug 23, 2019-

The most important part of the industrial and bearing industry. Steel balls are important basic components, especially precision industrial steel balls play a huge role in the development of the national economy. Under special conditions, steel balls of special materials are usually required to perform the functions required for different environments. In fact, some special materials steel balls have been widely used in various fields of the national economy, including stainless steel, copper, aluminum, titanium alloy steel and agate, glass, ceramic balls and so on.

The 9Cr18 stainless steel ball is the most important part of the bearing and the most used rolling element in the bearing industry. Its quality directly affects the quality of the bearing. The post-treatment of steel ball production, namely automatic cleaning of steel balls, automatic visual inspection (automatic rejection of unqualified products), automatic rust prevention, counting and packaging, are the key factors affecting the quality of steel balls. The visual inspection of steel balls is an indispensable process in the processing of steel balls. The visual inspection of the steel ball mainly includes the detection of surface scratches, rust, surface spots, and the like.

Can be used as a damper for skyscrapers. The steel ball is very hard. This is important in some widgets. The quality of steel balls is affected in many ways:

1 material density effect: steel ball, cast iron ball, alloy steel ball, etc., the density of different materials is different, the density of steel is greater than the density of cast iron, the density and density of alloy steel are different from the content of main alloying elements.

Can be used as a damper for skyscrapers. The steel ball is very hard. This is important in some widgets. The quality of steel balls is affected in many ways:

1 material density effect: steel ball, cast iron ball, alloy steel ball, etc., the density of different materials is different, the density of steel is greater than the density of cast iron, the density and density of alloy steel are different from the content of main alloying elements.

2 steel ball manufacturing method: rolling and forging steel balls have a dense structure, so the density is large, cast cast steel balls, cast iron balls or cast alloy balls are not dense, and even have pores, so the density is small. some.

3 Metallographic effects of steel balls: The density of different crystal structures such as martensite, austenite, bainite and ferrite is also different, which also affects the crystal fineness.

4 chemical composition factors: steel ball products due to chemical composition such as iron, carbon, chromium, manganese, sulfur, phosphorus and other components, steel ball hardness, impact wear have varying degrees of impact, in general, the equivalent of chromium is very large, Steel balls have high wear resistance. high quality!

9Cr18 steel martensitic stainless steel contains carbon and chromium. It is for this reason that it is easy to form uneven carbides in the steel and affect the properties of the steel. This requires attention during the production process. Due to the high C and Cr in the steel, the steel has high strength and also has stainless steel and corrosion resistance. It is commonly used in the production of stainless steel or weakly corrosive media, resistant to oxidizing acids, organic acids and corrosive balls such as salt, bearings, high quality knives and scissors, surgical tools, wear parts and more.

Due to its high carbon content in steel, it has high hardness and wear resistance after quenching. It has excellent rust and corrosion resistance in the atmosphere, water and some acid and salt aqueous solutions, especially when this steel contains molybdenum. This steel has poor weldability and should not be used as a welding material. Used in the manufacture of slicing mechanical cutting tools, shearing tools, surgical blades, bearings, valve plates and other components that are subject to high friction and work under corrosive media conditions.